[evince] docs: Add ev_mapping_list_get symbol to libevdocument-sections.txt

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 871da07d8fed5da6448f936a213ae8d63893df86
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Thu Oct 3 14:18:02 2013 +0200

    docs: Add ev_mapping_list_get symbol to libevdocument-sections.txt
    
    Add also since tag to API docs comment and missing g_return macro.

 .../libdocument/libevdocument-sections.txt         |    1 +
 libdocument/ev-mapping-list.c                      |    4 ++++
 2 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/help/reference/libdocument/libevdocument-sections.txt 
b/help/reference/libdocument/libevdocument-sections.txt
index 59ae691..e2f26cf 100644
--- a/help/reference/libdocument/libevdocument-sections.txt
+++ b/help/reference/libdocument/libevdocument-sections.txt
@@ -784,6 +784,7 @@ EvMappingList
 ev_mapping_list_new
 ev_mapping_list_ref
 ev_mapping_list_unref
+ev_mapping_list_get
 ev_mapping_list_get_data
 ev_mapping_list_get_list
 ev_mapping_list_get_page
diff --git a/libdocument/ev-mapping-list.c b/libdocument/ev-mapping-list.c
index a7abc40..cf7a59a 100644
--- a/libdocument/ev-mapping-list.c
+++ b/libdocument/ev-mapping-list.c
@@ -106,6 +106,8 @@ ev_mapping_list_nth (EvMappingList *mapping_list,
  * @y: Y coordinate
  *
  * Returns: (transfer none): the #EvMapping in the list at coordinates (x, y)
+ *
+ * Since: 3.12
  */
 EvMapping *
 ev_mapping_list_get (EvMappingList *mapping_list,
@@ -114,6 +116,8 @@ ev_mapping_list_get (EvMappingList *mapping_list,
 {
        GList *list;
 
+        g_return_val_if_fail (mapping_list != NULL, NULL);
+
        for (list = mapping_list->list; list; list = list->next) {
                EvMapping *mapping = list->data;